Optogenetics: Rho GTPases Activated by Light in Living Macrophages

  • Maren Hülsemann
  • Polina V. Verkhusha
  • Peng Guo
  • Veronika Miskolci
  • Dianne CoxEmail author
  • Louis HodgsonEmail author
Part of the Methods in Molecular Biology book series (MIMB, volume 2108)


Genetically encoded optogenetic tools are increasingly popular and useful for perturbing signaling pathways with high spatial and temporal resolution in living cells. Here, we show basic procedures employed to implement optogenetics of Rho GTPases in a macrophage cell line. Methods described here are generally applicable to other genetically encoded optogenetic tools utilizing the blue-green spectrum of light for activation, designed for specific proteins and enzymatic targets important for immune cell functions.

Key words

Rho GTPases Optogenetics Photoactivatable proteins LOV2 



This work was supported by National Institutes of Health grant T32GM007491 to V.M., R01GM129098 and R01GM132098 to L.H. National Cancer Institute P30CA013330 for Analytical Imaging Facility support. Irma T. Hirschl Career Scientist Award to L.H. pTriEX-mVenus-PA-Cdc42 (Addgene #75263), pTriEX-mVenus-PA-Rac1 (Addgene #22007), pTriEX-PA-Rac1 C450R (Addgene #22025), pTriEX-NTOM20-LOV2 WT (Addgene #81009) and pTriEx-mVenus-Zdk1-VAV2 DH/PH/C1 (Addgene #81133) were gifts from Dr. Klaus Hahn (UNC-Chapel Hill).


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2020

Authors and Affiliations

  • Maren Hülsemann
    • 1
    • 2
  • Polina V. Verkhusha
    • 1
  • Peng Guo
    • 1
    • 2
    • 3
  • Veronika Miskolci
    • 4
  • Dianne Cox
    • 1
    • 2
    Email author
  • Louis Hodgson
    • 1
    • 2
    Email author
  1. 1.Department of Anatomy and Structural BiologyAlbert Einstein College of MedicineBronxUSA
  2. 2.Gruss-Lipper Biophotonics CenterAlbert Einstein College of MedicineBronxUSA
  3. 3.Analytical Imaging FacilityAlbert Einstein College of MedicineBronxUSA
  4. 4.Department of Medical Microbiology and ImmunologyUniversity of Wisconsin–MadisonMadisonUSA

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